CN107523760A - A kind of stainless steel of anti-printing and dyeing corrosion and its manufacture method and application - Google Patents
A kind of stainless steel of anti-printing and dyeing corrosion and its manufacture method and application Download PDFInfo
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- CN107523760A CN107523760A CN201710742469.6A CN201710742469A CN107523760A CN 107523760 A CN107523760 A CN 107523760A CN 201710742469 A CN201710742469 A CN 201710742469A CN 107523760 A CN107523760 A CN 107523760A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/527—Charging of the electric furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacturing & Machinery (AREA)
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention provides a kind of stainless steel of anti-printing and dyeing corrosion and its manufacture method and application.By percentage to the quality, the stainless steel of the anti-printing and dyeing corrosion includes following components：C≤0.02%, Si：0.3% 0.5%, Mn：1.2% 1.4%, Ni：12.01% 12.5%, Cr：17.1% 17.9%, Mo：2.8% 3.0%, N≤0.03%, surplus is Fe and other inevitable elements, and its grain size is 8 9.5 grades, and surface Vickers hardness is 160 190HV.The present invention also provides the manufacture method of the stainless steel of above-mentioned anti-printing and dyeing corrosion, it is by reducing cold rolled annealed temperature, control the grain size of stainless steel slab, improve polishing grinding performance, the hardness of stainless steel slab is improved by increasing the roll-force of planisher simultaneously, corrosive nature caused by reducing its mechanical damage during subsequently processing declines.
Description
Technical field
The invention belongs to steel and iron manufacturing field, be related to a kind of anti-printing and dyeing corrosion stainless steel and its manufacture method with should
With.
Background technology
Austenitic stainless steel containing Mo using ASTM316L as representative has excellent corrosion resistance, weldability and processability
Etc. combination property so that the product purpose is quite varied, particularly in dyeing machine manufacturing, using even more very wide
It is general.
High-temperature high-speed dyeing machine is the key equipment of dyeing, mainly by dye vat, heat exchanger, filter, pipe arrangement, height
Press centrifugal pump, cloth guide tube, overflow the composition such as nozzle, textile fabric lifting system, casing drum, cloth discharge device, outlet assembly and electrical control cabinet.Dye vat, heat
Exchanger and filter are the primary pressure vessels of dyeing and printing process.The operating pressure of dye vat is generally 0.35MPa-0.45MPa, work
It it is about 140 DEG C -160 DEG C as temperature, medium is dye liquor；The structure type of heat exchanger is mainly shell-and-tube, tube side operating pressure
≤ 0.45MPa, operating temperature≤150 DEG C, shell side operating pressure≤0.8MPa, operating temperature≤175 DEG C, tube side medium are dye
Liquid, shell side medium are saturated vapor.Overflow dyeing machine, heat exchanger and the main material of filter are usually austenite 316L stainless
Steel.The working environment of overflow dyeing machine is more complicated, and in use, cloth edge has the hook that quantity does not wait to dyeing machine
Collided in the process of running with dye vat wall, form mechanical damage, formed corrosion and starting point occurs, and be directed to different textiles
Need to use a variety of dyestuffs again, in order to improve printing quality, generally require to add auxiliary agent in dye liquor so that dye liquor into
It is point more complicated, wherein comprising the chlorion to austenitic stainless steel with corrosiveness, particularly environmental protection upgrading in recent years, in
After the policies such as Water circulation and process implementing so that Chlorine in Solution ion concentration generally rises, and a brand-new dyeing machine makes from input
With, at least at most 1 year half a year yarn hook problem caused by the different degrees of corrosion of large area just occurs.If be continuing with,
Cause the spot corrosion of dyeing colour machine and stress corrosion to destroy aggravation, finally cause dye vat to explode suddenly, bring about great losses and hinder with personnel
Die.By to more failure product investigation and analysis, it is to have different degrees of spot corrosion and stress corrosion to send out to determine more than 80% product
Raw, wherein spot corrosion has become the principal element for restricting the dyeing machine life-span.So reduce the machine of dyeing machine in use
Tool damages, and improves decay resistance, extends the dyeing apparatus life-span, crucial in solving 316L stainless steel materials in liquid of printing and dyeing
Corrosion, this has become the problem of dyeing machine manufacturing is in the urgent need to address.
The content of the invention
In view of the shortcomings that above-mentioned prior art, it is an object of the invention to provide a kind of stainless steel of anti-printing and dyeing corrosion and
Its manufacture method and application.The stainless steel of the anti-printing and dyeing corrosion has good anti-strong acid homogeneous corrosion performance and anti-Cl-Point
Corrosion energy, and good bruise resistance.The manufacture method cost is not high and technique is simple, conveniently.
In order to reach foregoing goal of the invention, a kind of stainless steel of anti-printing and dyeing corrosion provided by the invention, with quality hundred
Divide includes following components than meter, the stainless steel of the anti-printing and dyeing corrosion：C≤0.02%, Si：0.3%-0.5%, Mn：
1.2%-1.4%, Ni：12.01%-12.5%, Cr：17.1%-17.9%, Mo：2.8%-3.0%, N≤0.03%, surplus
For Fe and other inevitable elements.
According to a particular embodiment of the invention, it is preferable that the stainless steel of the anti-printing and dyeing corrosion includes following components (generation
Tabular value)：C：0.017%, Si：0.42%, Mn：1.28%, Ni：12.2%, Cr：17.3%, Mo：2.88%, N：0.015%,
Surplus is Fe and other inevitable elements.
According to a particular embodiment of the invention, the raw material of the stainless steel of the anti-printing and dyeing corrosion includes the first raw material group
Point, the second raw material components, ferronickel and molybdenum-iron；
Wherein, first raw material components include high-phosphorus nickel-chromium pig iron, carbon steel and lime, and in first raw material, it is high
The mass ratio of phosphorus nickel-chromium pig iron and carbon steel is (18-22): (1-4), and lime quality is the gross mass of high-phosphorus nickel-chromium pig iron and carbon steel
6-15%；
Second raw material components include high-phosphorus nickel-chromium pig iron, carbon steel and lime, and in second raw material, high-phosphorus nickel-chromium
The mass ratio of the pig iron and carbon steel is (30-55)：1, the lime in second raw material components and the lime in first raw material
Quality sum be 100kg-200kg/ ton molten steel.The throwing amount of the ferronickel and molybdenum-iron determines according to actual process demand, in AOD
Ferronickel is put into during refining and molybdenum-iron uses the technical requirements that composition of steel meets the stainless steel finished product of last anti-printing and dyeing corrosion.
According to a particular embodiment of the invention, it is preferable that the grain size of the stainless steel of the anti-printing and dyeing corrosion is 8-9.5
Level, surface Vickers hardness is 160-190HV.
Decay resistance of the present invention is according to the anti-strong acid homogeneous corrosion performance of product of the present invention and anti-Cl-Spot corrosion
The overall merits such as performance.
The stainless composition of steel of above-mentioned anti-printing and dyeing corrosion meets the requirement of GB24511-S31603 standards, belongs to austenite stainless
Steel, the Ni contents of in general austenitic stainless steel are 10.01%-10.4%, and Cr contents are 16.4%-17.0%, and Mo contents are
2%-2.2%, compared with general austenitic stainless steel, Ni contents improve in the stainless steel of anti-printing and dyeing corrosion provided by the invention
More than 15%, Cr contents improve more than 5%, Mo contents and improve more than 20%, and C content reduces nearly 33%, N content drop
Low nearly 57%, so as to improve the decay resistance of stainless steel product, meanwhile, compared with than general austenitic stainless steel, this
Si contents, which reduce nearly 20%, Mn contents, in the stainless steel for the anti-printing and dyeing corrosion that invention provides reduces nearly 7%, greatly carries
The high hardness of stainless steel product, reduces magnetic, so as to reduce the possibility that mechanical damage induces corrosion and occurred；In addition,
The grain size of the stainless steel of anti-printing and dyeing corrosion provided by the invention reaches more than 8 grades, greatly improves product in following process
During polishing grinding performance, while also improve the hardness of stainless steel product, the surface Vickers of stainless steel product of the present invention
Hardness reaches 160-190HV, greatly reduces mechanical damage of the product in following process production process, alleviates because machinery damages
Corrosion resistance caused by wound declines, and therefore, stainless steel product of the invention possesses good hardness, polishability and excellent anti-corruption
Corrosion energy, contrast the general service S31603 materials used in existing market and be more suitable for dyeing machine, can effectively extend dyeing machine
More than 2-3 times of life of product, and material manufacture cost increase only 20% or so.Therefore, anti-printing and dyeing liquid provided by the present invention is rotten
The dyeing machine product that the stainless steel of erosion is processed into effectively extends equipment life, reduces the production cost of dyeing.
The present invention also provides the manufacture method of the stainless steel of above-mentioned anti-printing and dyeing corrosion, and it includes steel processed, hot rolling, heat successively
Roll annealing and pickling, cold rolling, cold rolled annealed pickling and correction step；
In the cold rolled annealed acid pickling step, cold rolled annealed temperature is 950 DEG C -1100 DEG C, time 60s-90s；
The roll-force of planisher is 220Ton-250Ton；Elongation percentage is 0.2%-1%.Manufacturer compared with common 316L stainless steels
Method is compared, and the present invention controls the grain size of stainless steel slab, improves polishing grinding performance by reducing cold rolled annealed temperature,
The hardness of stainless steel slab is improved, reduces the generation of corrosion, while the roll-force by increasing planisher improves stainless steel
The hardness of slab, corrosive nature caused by reducing its mechanical damage during subsequently processing decline.
In above-mentioned manufacture method, the hot rolling, hot-roll annealing pickling, cold rolling and correction step can use conventional
The method for manufacturing of 316L stainless steels.
According to a particular embodiment of the invention, it is preferable that by percentage to the quality, the high-phosphorus nickel-chromium pig iron includes following
Elemental constituent：C≤4.5%, Cr：1.0-5.0%, Si≤4.0%, S≤0.04%, P：0.03%-0.100%, Cu≤
0.1%, Mn≤0.5%, Ni：3.0%-15.0%, surplus Fe and other inevitable elements.
According to a particular embodiment of the invention, it is preferable that the steel step processed uses secondary batching method, by feeding intake twice
Electric furnace dephosphorization twice, then to be tapped again through skimming, after refining desulfuration deoxidation, continuous casting obtains stainless steel slab, wherein,
Feed intake including high-phosphorus nickel-chromium pig iron, carbon steel and lime for 1st time, and the weight of high-phosphorus nickel-chromium pig iron and carbon steel ratio is
(18-22): (1-4), the 1st charge weight of lime account for high-phosphorus nickel-chromium pig iron and the 6-15% of carbon steel charge weight sum, the described 1st
The secondary throwing amount to feed intake accounts for the 50%-60% of furnace volume；
Feed intake including high-phosphorus nickel-chromium pig iron, carbon steel and lime for 2nd time, and the mass ratio of high-phosphorus nickel-chromium pig iron and carbon steel is
(30-55)：1, the 2nd charge weight of lime and the 1st charge weight sum are 100kg-200kg/ ton molten steel, the 2nd throwing
The throwing amount of material accounts for the 40%-50% of furnace volume.
In above-mentioned manufacture method, the electric furnace dephosphorization refers to the work for carrying out dephosphorization to pig iron raw material using steel-smelting electric furnace
Skill, it can use the conventional electric furnace in this area to realize.
According to a particular embodiment of the invention, it is preferable that total turn on angle that No. the 1st electric furnace dephosphorization is powered is 190-
240KWh/ ton molten steel, total turn on angle that No. the 2nd electric furnace dephosphorization is powered is 120-180KWh/ ton molten steel.
According to a particular embodiment of the invention, it is preferable that the oxygen that No. the 1st electric furnace dephosphorization is blown into the electric furnace it is total
Measure as 10-20Nm3KWh/ ton molten steel, the total amount for the oxygen that No. the 2nd electric furnace dephosphorization is blown into the electric furnace is 30-40Nm3KWh/
Ton molten steel.
According to a particular embodiment of the invention, it is preferable that the steel step processed is specially：
Being added into the electric furnace for 1st time includes the furnace charge of high-phosphorus nickel-chromium pig iron, carbon steel and lime, and the 1st time of furnace charge fills
Enter the 50-60% that amount is heat size, wherein, the weight ratio of high-phosphorus nickel-chromium pig iron and carbon steel is (18-22): (1-4), the of lime
1 charge weight accounts for high-phosphorus nickel-chromium pig iron and the 6-15% of carbon steel charge weight sum；The 1st lasting energization is carried out, and is persistently being led to
It is blown into oxygen in electric process for 1st time into the electric furnace, it is 10-20Nm that the 1st time of oxygen, which is blown into total amount,3/ ton molten steel；Work as energization
When amount reaches 180-230KWh/ ton molten steel, stop lasting energization, oxygen is blown into furnace charge into the electric furnace using furnace wall burner
It is stirred, while stirring be powered and the 1st time is flowed slag operation, wherein, furnace wall burner oxygen blast and energization are interruption work
Industry, total turn on angle of the 1st energization is 190-240KWh/ ton molten steel；
Loading into the electric furnace for 2nd time includes the furnace charge of high-phosphorus nickel-chromium pig iron, carbon steel and lime, and the 2nd time of furnace charge fills
Enter the 40-50% that amount is heat size, wherein, the weight ratio of high-phosphorus nickel-chromium pig iron and carbon steel is (30-55): 1, the 1st time of lime
Charge weight and the 2nd charge weight sum are 100-200kg/ ton molten steel；
The 2nd lasting energization is carried out, while is blown into oxygen for the 2nd time into stove, the 1st time and the 2nd amount of oxygen being blown into
For 45-75Nm3/ ton molten steel；When turn on angle reaches 50-120KWh/ ton molten steel, stop it is lasting be powered, using furnace wall burner to
Oxygen is blown into electric furnace to be stirred furnace charge, while stirring be powered and the 2nd time is flowed slag operation, wherein, furnace wall is burnt
Mouth oxygen blast and energization are interruption operation, and total turn on angle of the 2nd energization is 120-180KWh/ ton molten steel；
After the P content of molten steel in the electric furnace is less than or equal to 400ppm, molten steel is skimmed, it is stainless to carry out refining production
Steel；
The turn on angle that total turn on angle of 1st energization includes the 1st turn on angle being persistently powered and interruption is powered；
The turn on angle that total turn on angle of 2nd energization includes the 2nd turn on angle being persistently powered and interruption is powered.
Above-mentioned manufacture method, by improving Ni, Cr and the Mo content in composition of steel processed in steel-making process, adjustment reduces C,
N content, welding process carbon is reduced, and nitrogen compound is separated out from crystal boundary, so as to reach raising product corrosion resistance and production
The purpose of product welding performance.
According to a particular embodiment of the invention, it is preferable that stream quantity of slag during the 1st stream slag operation is given birth to for high-phosphorus nickel-chromium
The 5-20% of 1st charge weight of iron and carbon steel, stream quantity of slag during the 2nd stream slag are the of high-phosphorus nickel-chromium pig iron and carbon steel
The 25-50% of 2 charge weights；In described 1st time is flowed slag operation and the 2nd stream slag operation process, fluorite slugging is put into respectively,
Otal investment≤2.0 ton of the fluorite/stove.
The product quality of the manufacture method of the stainless steel of anti-printing and dyeing corrosion provided by the invention is designed in common 316L bases
On plinth, skimmed technology by controlling electric furnace secondary charging ratio, turn on angle and dephosphorization decarburization blowing oxygen quantity and introducing electric furnace, significantly
The input amount of low price high-phosphorus nickel-chromium pig iron is improved, so as to significantly reduce cost of material, is taken off by refinery process desulfurization of skimming
Oxygen reduces the level of product field trash, while slag dross inclusion adsorption is ensured, makes the fusing point of remaining field trash in steel reduce,
Hardness is reduced, and is properly increased alloying component ratio in molten steel while is ensured stainless steel slab quality and production cost.Moved back in cold rolling
In the fiery stage, by controlling annealing temperature and planisher roll-force, make the control of product grains degree between 8-9.5 levels, surface Vickers
Hardness is controlled between 160HV-190HV, so as to reach optimal using effect.
The present invention also provides application of the stainless steel of above-mentioned anti-printing and dyeing corrosion in dyeing machine as equipment and materials.Make
Life-span with the dyeing apparatus of the stainless steel of above-mentioned anti-printing and dyeing corrosion is more than 2-3 times of general dyeing apparatus life-span.With showing
There is technology to compare, the stainless steel and its manufacture method of anti-printing and dyeing corrosion provided by the invention have the advantages that：
(1) stainless steel of anti-printing and dyeing corrosion provided by the invention Cr and Ni contents, improves stainless steel by increasing Mo
The corrosion resistance of slab, the processability of stainless steel slab is improved, reduce the magnetic after its following process, it is ensured that stainless steel
Slab obtain stable austenite structure, proper composition seam organization while, have both outstanding decay resistance；
(2) manufacture method of the stainless steel of anti-printing and dyeing corrosion provided by the invention, is largely made using high-phosphorus nickel-chromium pig iron
For raw material, by composition adjustment, process reform reduces the production cost of slab, while produces again and can significantly extend printing and dyeing
The stainless steel new material of machine service life.The stainless steel new material can produce the 316L dyeing machine purposes for meeting client's needs
Stainless steel product.
Brief description of the drawings
Fig. 1 is the average corrosion of the stainless steel and commercially available common 316L series stainless steels of the anti-printing and dyeing corrosion of embodiment 1
Speed compares figure；
Fig. 2 is the spot corrosion picture of the stainless steel for the anti-printing and dyeing corrosion that embodiment 1 provides；
Fig. 3 is the inner wall corrosion picture after the dyeing machine of embodiment 1 uses 6 months；
Fig. 4 is the inner wall corrosion picture after common 316L products dyeing machine uses 6 months.
Embodiment
In order to which technical characteristic, purpose and the beneficial effect of the present invention is more clearly understood, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
Embodiment 1
A kind of manufacture method of the stainless steel of anti-printing and dyeing corrosion is present embodiments provided, it comprises the following steps：
(1) steel processed：1 charging of electric furnace, high-phosphorus nickel-chromium pig iron 60ton, general carbon steel 9ton are loaded into electric furnace；The same time-division
Batch is by high hopper toward putting into 7146Kg quick limes in stove；For dephosphorization, the defective material of electric furnace 1 is powered since 7 grades of low-grade location
Starting the arc energization 3987KWh, then change to high tap position 15 grades and be energized to 7986KWh, then roll back 7 grades and be energized to 18677KWh,
Stop being powered；When turn on angle probably reaches 10650KWh, start with furnace door oxygen lance and be blown into 1574Nm3；Turn on angle reaches
After 18677KWh, according to bits state in stove, fluorite slugging is put into, and oxygen is blown into using furnace wall burner oxygen blast pattern
100Nm3Molten steel is stirred, while with 7 grades of energization 2000KWh and carries out flowing slag operation, the stream quantity of slag is 8.3Ton, and stream slag is made
After industry terminates, prepare 2 chargings；
2 chargings of electric furnace, high-phosphorus nickel-chromium pig iron 50ton, general carbon steel 1ton are loaded into electric furnace, and start in batches toward stove
Input lime 5731kg in sub；22973KWh equally is energized to low-grade 7 grades of starting the arc, 15 grades is then gone to and is energized to
25432KWh, 30387KWh then is energized to using 7 grades, stops lasting being powered；Furnace door oxygen lance is utilized while being initially powered up
Oxygen 3257Nm is blown into toward stove3(about 51 minutes).After step 7 stops lasting being powered, according to bits state in stove, input
The mobility of fluorite (putting into 1.8 tons altogether twice) increase slag；And while being powered with 3 grades of interruptions, blown using furnace wall burner
(burner oxygen blast in furnace wall is blown into oxygen 751Nm to oxygen altogether twice3) molten steel is stirred, and carry out flowing slag operation, the stream quantity of slag is
18Ton, go out soup after the end of job；Wherein, the total electricity in technical process is 38617KWh；After molten soup is quickly thoroughly skimmed, convert
Enter AOD refining furnaces and carry out refining process, refining furnace carries out decarburization, desulfurization, deoxidation operation and put into according to tapping target component each
Kind alloyed iron 48852Kg, taps after smelting 91min, and continuous casting obtains raw material slab.
The heat size of electric furnace employed in the present embodiment is 140 tons, and the electric quantity data in embodiment is from the 1st energization
Start the accumulated number of meter.By percentage to the quality, the main component of furnace charge high-phosphorus nickel-chromium pig iron includes C≤4.5%, Cr：
1.0-5.0%, Si≤4.0%, S≤0.04%, P：0.03%-0.100%, Cu≤0.1%, Mn≤0.5%, Ni：3.0%-
15.0%, surplus is Fe and other inevitable elements；The main component of the raw material slab finally obtained includes：C≤
0.02%, Si：0.3%-0.5%, Mn：1.2%-1.4%, Ni：12.01%-12.5%, Cr：17.1%-17.9%, Mo：
2.8%-3.0%, N≤0.03%, surplus are Fe and other inevitable elements.
(2) hot rolling：Using HSS rolls, by change width, and hot rolling calendering shuffling, hot rolling is carried out to raw material slab
Calendering, obtains the stainless steel after hot rolling；
(3) hot-roll annealing pickling：Continuous annealing is carried out at 980-1040 DEG C to the stainless steel after the hot rolling, and using broken
The continuous acid-washing technique of squama-ball blast-nitration mixture carries out pickling to remove oxide to the stainless steel plate after the hot-roll annealing, wherein throwing
Ball flow is controlled in 600kg/min, obtains the stainless steel after hot-roll annealing pickling；
(4) cold rolling：Cold rolling is carried out to the stainless steel plate after the hot-roll annealing pickling using cold-rolling mill, total reduction is
50-80%, wherein, use roughness using the working roll that roughness is 0.25 μm, last 2 passages before the passage of end 2 of the cold-rolling mill
For 0.07 μm of working roll, target thickness is cold-rolled to, obtains the stainless steel plate after cold rolling；
(5) cold rolled annealed pickling：Continuous annealing 60s-90s is carried out at 1020 DEG C to the stainless steel plate after the cold rolling, and
Pickling is carried out using the continuous acid-washing technique of electrolysis-nitration mixture, is subsequently placed in planisher, it is smooth with the progress of 230Ton roll-forces,
Obtain the stainless steel plate after cold rolled annealed pickling；
(6) finishing：Finishing is carried out to the stainless steel plate after the cold rolled annealed pickling, obtains the stainless of anti-printing and dyeing corrosion
Steel.
Stainless steel product general corrosion resistance performance evaluation：
The ASTM316L (import) that the stainless steel of anti-printing and dyeing corrosion made from the present embodiment is sold with market,
ASTM316L (11Ni), SUS316L and ASTM316L stainless steels are respectively placed in same printing and dyeing liquid and carry out corruption at the same temperature
Rate test is lost, its result is as shown in table 1, and 3 kinds of different printing and dyeing liquid are respectively adopted in experiment 1-3, wherein, the print that experiment 1 uses
Dye liquor includes nitric acid, 3% hydrofluoric acid and 0.5% sodium chloride that mass concentration is 10%, and the printing and dyeing liquid that experiment 2 uses includes
Mass concentration is 11% nitric acid, 3% hydrofluoric acid and 0.5% sodium chloride, and the printing and dyeing liquid that experiment 3 uses includes mass concentration
For 12% nitric acid, 3% hydrofluoric acid and 0.5% sodium chloride, Fig. 1 is the stainless of the anti-printing and dyeing corrosion of the present embodiment manufacture
The average corrosion rate compares figure of steel and commercially available common 316L series stainless steels.
Table 1
The stainless steel for the anti-printing and dyeing corrosion that the present embodiment manufacture obtains it can be seen from table 1 and Fig. 1, it is anti-uniformly rotten
Erosion ability is that possess excellent resistance to corrosion with more than 3 times of 316L steel series at present.
The ASTM316L (import) that the stainless steel of anti-printing and dyeing corrosion made from the present embodiment is sold with market,
ASTM316L (11Ni), SUS316L and ASTM316L stainless steel substrates carry out pitting test, this reality using GB17897-1999 standards
The spot corrosion picture of the stainless steel of anti-printing and dyeing corrosion made from example is applied as shown in Fig. 2 right respectively according to GB18590-2001 standards
The point corrosion pit of each stainless steel substrates is evaluated, and evaluation result is as shown in table 2.
Table 2
It can be seen from Fig. 2 and table 2 compared with common 316L steel series, the anti-printing and dyeing liquid of the present embodiment manufacture acquisition
The stainless steel of corrosion can effectively prevent the formation of point corrosion pit and grow up, and pitting corrosion resistant performance is 2 times of common 316L steel series
More than.
By the dyeing machine of the stainless steel of the anti-printing and dyeing corrosion obtained using the present embodiment manufacture with using common 316L systems
Internal corrosion situation of the dyeing machine of row steel grade after using 6 months is compared, its result respectively as shown in Figure 3 and Figure 4, by
Fig. 3 is understood, the dyeing machine of stainless steel of the anti-printing and dyeing corrosion obtained is manufactured using the present embodiment after using 6 months, internal
Surface only has a small amount of mechanical damage point, has no spot corrosion, and as shown in figure 4, being made using the dyeing machine of common 316L materials
After 6 months, the visible obvious hot spot of interior surface, and hot spot is more, corrosion depth is big.
From embodiment 1, the manufacture method of the stainless steel of anti-printing and dyeing corrosion provided by the invention, largely using high phosphorus
Nickel-chromium pig iron is as raw material, and by composition adjustment, process reform reduces the production cost of slab, while it is big to produce energy again
Width extends the stainless steel new material of dyeing machine service life.The stainless steel new material Cr and Ni contents, is improved by increasing Mo
The corrosion resistance of stainless steel slab, the processability of stainless steel slab is improved, reduces the magnetic after its following process, it is ensured that
Stainless steel slab obtain stable austenite structure, proper composition seam organization while, have both outstanding decay resistance,
Meet the 316L dyeing machine purposes of client's needs.
Claims (11)
- A kind of 1. stainless steel of anti-printing and dyeing corrosion, it is characterised in that：By percentage to the quality, it is described it is anti-printing and dyeing corrosion not Rust ladle includes following elemental constituent：C≤0.02%, Si：0.3%-0.5%, Mn：1.2%-1.4%, Ni：12.01%- 12.5%, Cr：17.1%-17.9%, Mo：2.8%-3.0%, N≤0.03%, surplus is Fe and other are inevitably first Element.
- 2. the stainless steel of anti-printing and dyeing corrosion according to claim 1, it is characterised in that：By percentage to the quality, it is described The stainless steel of anti-printing and dyeing corrosion includes following elemental constituent：C：0.017%, Si：0.42%, Mn：1.28%, Ni：12.2%, Cr：17.3%, Mo：2.88%, N：0.015%, surplus is Fe and other inevitable elements.
- 3. the stainless steel of anti-printing and dyeing corrosion according to claim 1 or 2, it is characterised in that：The anti-printing and dyeing corrosion The grain size of stainless steel be 8-9.5 levels, surface Vickers hardness is 160-190HV.
- 4. the manufacture method of the stainless steel of any one of the claim 1-3 anti-printing and dyeing corrosions, it is characterised in that：The manufacture Method its include steel processed, hot rolling, hot-roll annealing pickling, cold rolling, cold rolled annealed pickling and correction step successively；In the cold rolled annealed acid pickling step, cold rolled annealed temperature is 950 DEG C -1100 DEG C, time 60s-90s；It is smooth The roll-force of machine is 220Ton-250Ton；Elongation percentage is 0.2%-1%.
- 5. manufacture method according to claim 4, it is characterised in that：The steel step processed uses secondary batching method, passes through Feeding intake and electric furnace dephosphorization twice, then tapped again through skimming, after refining desulfuration deoxidation twice, continuous casting obtains stainless steel slab, its In,Feed intake including high-phosphorus nickel-chromium pig iron, carbon steel and lime for 1st time, and the weight of high-phosphorus nickel-chromium pig iron and carbon steel ratio is (18- 22): (1-4), the 1st charge weight of lime account for high-phosphorus nickel-chromium pig iron and the 6-15% of carbon steel charge weight sum, the 1st throwing The throwing amount of material accounts for the 50%-60% of furnace volume；Feed intake including high-phosphorus nickel-chromium pig iron, carbon steel and lime for 2nd time, and the mass ratio of high-phosphorus nickel-chromium pig iron and carbon steel is (30- 55)：1, the 2nd charge weight of lime and the 1st charge weight sum are 100kg-200kg/ ton molten steel, are fed intake for described 2nd time Throwing amount accounts for the 40%-50% of furnace volume.
- 6. manufacture method according to claim 5, it is characterised in that：By percentage to the quality, the high-phosphorus nickel-chromium pig iron Including following elemental constituent：C≤4.5%, Cr：1.0-5.0%, Si≤4.0%, S≤0.04%, P：0.03%-0.100%, Cu≤0.1%, Mn≤0.5%, Ni：3.0%-15.0%, surplus Fe and other inevitable elements.
- 7. manufacture method according to claim 5, it is characterised in that：Total turn on angle that No. the 1st electric furnace dephosphorization is powered is 190-240KWh/ ton molten steel, total turn on angle that No. the 2nd electric furnace dephosphorization is powered is 120-180KWh/ ton molten steel.
- 8. manufacture method according to claim 5, it is characterised in that：What No. the 1st electric furnace dephosphorization was blown into the electric furnace The total amount of oxygen is 10-20Nm3/ ton molten steel, the total amount for the oxygen that No. the 2nd electric furnace dephosphorization is blown into the electric furnace is 30- 40Nm3/ ton molten steel.
- 9. manufacture method according to claim 5, it is characterised in that：The steel step processed is specially：Being added into the electric furnace for 1st time includes the furnace charge of high-phosphorus nickel-chromium pig iron, carbon steel and lime, the 1st charge weight of furnace charge For the 50-60% of heat size, wherein, the weight ratio of high-phosphorus nickel-chromium pig iron and carbon steel is (18-22): (1-4), the 1st time of lime Charge weight accounts for high-phosphorus nickel-chromium pig iron and the 6-15% of carbon steel charge weight sum；The 1st lasting energization is carried out, and is continuing to be powered It is blown into oxygen in journey for 1st time into the electric furnace, it is 10-20Nm that the 1st time of oxygen, which is blown into total amount,3/ ton molten steel；When turn on angle reaches During to 180-230KWh/ ton molten steel, stop lasting energization, be blown into oxygen into the electric furnace using furnace wall burner is carried out to furnace charge Stirring, while stirring be powered and the 1st time is flowed slag operation, wherein, furnace wall burner oxygen blast and energization are interruption operation, the Total turn on angle of 1 energization is 190-240KWh/ ton molten steel；Loading into the electric furnace for 2nd time includes the furnace charge of high-phosphorus nickel-chromium pig iron, carbon steel and lime, the 2nd charge weight of furnace charge For the 40-50% of heat size, wherein, the weight ratio of high-phosphorus nickel-chromium pig iron and carbon steel is (30-55): 1, the 1st loading of lime Amount and the 2nd charge weight sum are 100-200kg/ ton molten steel；The 2nd lasting energization is carried out, while is blown into oxygen for the 2nd time into stove, the 1st time and the 2nd time the amount of oxygen being blown into is 45- 75Nm3/ ton molten steel；When turn on angle reaches 50-120KWh/ ton molten steel, stop lasting energization, using furnace wall burner into electric furnace It is blown into oxygen to be stirred furnace charge, while stirring be powered and the 2nd time is flowed slag operation, wherein, furnace wall burner oxygen blast It is interruption operation with energization, total turn on angle of the 2nd energization is 120-180KWh/ ton molten steel；After the P content of molten steel in the electric furnace is less than or equal to 400ppm, molten steel is skimmed, carries out refining production stainless steel；The turn on angle that total turn on angle of 1st energization includes the 1st turn on angle being persistently powered and interruption is powered；The turn on angle that total turn on angle of 2nd energization includes the 2nd turn on angle being persistently powered and interruption is powered.
- 10. manufacture method according to claim 9, it is characterised in that：Stream quantity of slag during the 1st stream slag operation is height The 5-20% of 1st charge weight of phosphorus nickel-chromium pig iron and carbon steel, stream quantity of slag during the 2nd stream slag for high-phosphorus nickel-chromium pig iron and The 25-50% of 2nd charge weight of carbon steel；In described 1st time is flowed slag operation and the 2nd stream slag operation process, put into respectively Fluorite slugging, otal investment≤2.0 ton/stove of the fluorite.
- 11. the stainless steel of any one of the claim 1-3 anti-printing and dyeing corrosions answering as equipment and materials in dyeing machine With.
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